AP®︎ Chemistry: Topic 5.7 Flashcards

Master key terms and definitions for Topic 5.7 of AP Chemistry – Introduction to Reaction Mechanisms to help you prep for quizzes and the AP exam.

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Term

Reaction Mechanism

Definition

A sequence of elementary steps that shows how reactants become products.

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Reaction Mechanism
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A sequence of elementary steps that shows how reactants become products.

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Elementary Step
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A single molecular event in a mechanism that occurs in one reaction step.

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Reaction Intermediate
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A species formed in one step and consumed in a later step.

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Catalyst
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A substance that speeds a reaction and is regenerated rather than consumed.

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How To Identify Intermediates And Catalysts In A Mechanism
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Intermediates are produced then consumed; catalysts are consumed then regenerated across the steps.

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Overall Balanced Equation From A Mechanism
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Add all elementary steps and cancel repeated species to get the overall balanced reaction.

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Mechanism Components
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A mechanism may include reactants, intermediates, products, and catalysts across its steps.

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